Mars lies around 140 million miles from our Pale Blue Dot. Yet despite the vast distance, it turns out the red planet has a greater impact on ours than we originally thought. Mars’ gravitational pull significantly affects the ocean depths. Surprising recent geological studies reveal a hidden effect of this interplanetary interaction, manifesting as cyclic changes in deep ocean currents. This discovery, published in Nature Communications and led by the University of Sydney, provides a new perspective on Earth’s past and future climate. At the heart of this research lies the concept of an astron…